f(x)=(3x-7)/(x+1)
Zero at and undefined at .
INTERVAL EXAMPLE x SIGN OF f(x)
-3 (-)/(-)=(+), positive
0 (-)/(+)=(-), negative
4 (+)/(+)=(+), positive
The function has a horizontal asymptote of y=3.
Will f(x) ever be ?
----impossible to solve this. No solution.
RANGE: The real numbers such that
DOMAIN: Set of real numbers such that